Ventilating device.



No. 878,474. PATBNTED FEB. 4, 1908. J. L. WATBRBURY d; C. WATERMAN.

VENTILATING DEVICE.

APPLICATION FILED HY 10, 1907.

To all 'a/:eom 'it 'may concern.:

" BURY ai) FFCE.

VENTILATING DE VICE.

Specification ot Letters Patent.

Patented Feb. 4, 1908.

.Implication and Mig 10.19o7.- sarai No. 372.941.

Be it known that we, JAMES L. WATER- id CLYDE WATERMAN, of Minneapolis, Hennepin county, Minnesota, have invented certain new and 'useful improvements in Ventilating Devices, of which the following is a specification.

Our invention relates to Ventilating,r devices designed particularly for use in school rooms where stoves or similar heatingtapparatus are employed, with the smoke flue` extending 'from the heater through, the room to the chimney.

Flhe device. is also capable of use wherever a heating apparatus witha smoke ilue in the room isemployed and it isdesired to remove the impure air and increase the radiating surface, `and it may also be applied to thesmoke fluesmf a heatingr apparatus located Iin .the basement of a residence or other structure.

The object of our invention is toiprovide a simple inexpensive apparatus'capable of use with any style pf heater and easily and quickly controlled. A

The invei'ition.consists generally in various constructions and combinations, all as hereinafter described and particularly pointed out in the claims.' i i .in thel acrompanyinel drawings, forming part of this specification, Figure 1j is a front elevation of a heater and a Ventilating device iii'-comection thcrewi th embodying; our invention. Fig. 2 is a sectional View of a portion of the smoke fiue at the point where the foul airflue is attached thereto.

In the drawings, 2 represents the floor of the room, 3 the outside wall, and 4 the chimney.

5 is a heater inelo'sed with an improved form -of jacketv which forms a part ol" our system, and is connected with the outside air through an intake pipe 6. i

7 is the portion 'of the smoke flue connected with the heater and 8 is an enlarged section forming a continuation of the ilue 7 and connectingl it with,l the chimney. An opening 9 is provided in the under side of the section 8 inclosed by a 'frame 10 preferably of cast metal. A vertical flue 11 for the i'oul air is attached at its upper end to :the frame 10 and has anV open lower end supportedwrpon .the legs i 13 is a shaft pivoted in the iframe l() and provided with an. .arm 14 to wir :h an operating chain '15 isattached, a hook 16 being provided on thelsideof the iue te engage the l j l l l l chain and adjust the shaft and arm in any desired position. A valve 17 is mounted on said shaft and is adapted to tit a seat 18 in the frame 1() and close the top of the flue 11. The top of .the valve 17 is imperforatc and its bottom is provided with a series of holes 19 leading to a chamber 20, and the side walls of said chamber connecting the top and bottom oi the valve are also imperforate exce` t for an opening 21' provided therein near t 1e shaft 13 and close to thebottom of the smoke llue. Nhen the valvel is raised to the' osition indicated billig. 2 to an angle of a out Si) vdegrees, the `cold air ilowingup through the vertical flue 1.1 will be divided, a portion passing on through to the chimney and the remainder entering the holes 19 into the chamber 2() and from thence passing thou h the opening 21 and along the bottom .of t e Smoke flue, to the combustion chamberyof the heater where the oxygen ,in the air thus admitted will increase combustion. We thus avoid the necessity of opening the door of the heater and admitting the cold air directly over the fire.v Such admission of air has always been objectionable as it has a tendlil) ency to deadenl the i'ire and retard combustion, while air admitted along the lower wall of the smoke flue will increase and facilitate combustion. f By 'takingvljn the air through the Ivertical .flue and passing it down through the smoke flue'we are able' to heat it and deliver. oxygenil to the combustion chamber without any danger of checking the fire. A Wing 22 is preerably'i'ormed on the valve extending inthe roar of its pivot to act as a guide and direct the air along the lower wall ofthe smoke flue.

The section 8 ot' the smoke lue is of sub` 9 stantially the same diameter as the flue 11 and the currents of airfand the roduct of combustion, will not, therefore, e 'retarded when they mingle at the junction of the smoke with the foul air ilue. The enlarged portion 8 of the smoke flue and the upper portion of the foul air flue will be heated suiliciently by the gases and products of combustion, and a strong dratt will be established up through the foul air flue to take away the impure airin the. room and disch arge it into the chimney. The apparatus can be made ofl any suitable size according `to the capacity oi the heater and the `phufe where .it is to be used. i

We claim as our invention: l. The combination,l with a i'ieatr and' smoke @endete foul air line eormnunientin. I with said smoke line, e valve rovded et th junction of seid smoke flue Wlth seid foul ir l ne, said valve being hingedon one side and ,l adapted to close the discharge end. of said I foul eirue and to be swung across and paru l tialvly close the passage through said smoke flue, Said valve having an imperforate top and t a perforated 'bottomA with a chamber between them and an opening through the wall of l l l l said chamber' through which opening e portion of thee'f Drought up by sald'foul air fine and admitted to said chamber is directed along the bottom heater. v l 2. The combination, with a heater and a smoke flue connected therewith and a foul air flue communicating with said smoke flue, a valve provided et the' junction of seid smoke Hue and said foul air flue and pivotally supported at one edge on the' side' of said foul l yair flue contiguous to said heater,` said valve being arranged to close thetop of said foul air ue and adapted when partially open to deflect the foul air from seid iuealon the bott/om of said smoke line, theheated 'an vbeing conducted through seid smoke flue over said 'valve and along the up er Walls of seid smoke flue, whereby the foulpair'ie prevented from acting as a check upon theheated gases passingtllrouvh said smoke fine;

3. The corn ine'ton, Witha heater and e smoke tine having an enlarged section and e chimne communicating therewith, of a fool air ue leading into said enlarged section and of substantall the semediaroeter as sind enlarged section, said foul air flue having an open end near the door and adaptedV 'to con duct 'the impure air into seid enlarged section end mingle it With'the products of combosu 1 of saidsmoke flue to the ti .n seid smoke Hue, and a valve hinged at 'the junction of seid; enlarged section with foul air ine end adapted to close the lischarge end of said foul air flue and swinen across and partially close the passage throngn.

of said Snickelue to the heater While the remaining ortionis mingled with the prod- ,ucts'oi comy nstion and enters said chimney, substantially as described.

Sinole ue connected therewith-#af a chimney; said smoke flue having an enlarved section leading into seid chimney and a ljo'ul air due communicating With said enlarged section, a zelve pivoted at the junction of Said foul eil adapted when closed to prevent the discharge of foul air intovsaid enlarged smoke due sec-- tion, said smoke fine being entirely unobstructed when said valve isfelosed and seid Yvalve when swung ,ertielly across said smoke iiue acting as e deector te direct the-foul eir currents along the bottom of said smoke fine end prevent thern from vacting as a check on the heat-ed gases in the top of said smoke flue, Substantially es described.

ln Witness whereof, we'have hereunto set" our hande this 3d day of May 190?,

JAMES L. VVATERBURY. CLYDE WVATERMAN.

-lfntnesses1 v Rronnan PAUL, J, E. Ens.

The combination, with agheeter and a' nue with said enlarged smoke flue section and 

